/* 基础 reset */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; color: #333; }
a { color: #1890ff; text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: #f5f5f5; padding: 1px 6px; border-radius: 3px; font-family: Consolas, Monaco, monospace; font-size: 13px; color: #c7254e; }
h1, h2, h3 { color: #333; }
h1 { font-size: 22px; }
h2 { font-size: 18px; }
h3 { font-size: 16px; }
small { color: #999; font-size: 12px; }
ul { padding-left: 20px; }
li { margin: 4px 0; }
input:focus, select:focus, textarea:focus { outline: none; border-color: #1890ff; }